package com.xinsmartsky.penmaji.penmaji;

/**
 * Created by wangxiao on 16-1-29.
 * 多线程练习
 */
public class DemoProducerConsumer {
    public static void main(String[] args) {
SyncStack ss = new SyncStack();
        Producer p = new Producer(ss);
        Consumer c = new Consumer(ss);
        new Thread(p).start();//一个生产者一个消费者
        new Thread(c).start();
    }
}

class WoTou {
    int id;

    WoTou(int id) {
        this.id = id;
    }

    public String toString() {
        return "WoTou:" + id;
    }
}

//栈
class SyncStack {
    int index = 0;
    WoTou[] arrWT = new WoTou[6];

    public synchronized void push(WoTou wt) {
        if (index == arrWT.length) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        this.notify();//叫醒其它线程  不能叫醒自己的wait
        arrWT[index] = wt;
        index++;
    }

    public synchronized WoTou pop() {
        if (index == 0) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        this.notify();
        index--;
        return arrWT[index];
    }
}

class Producer implements Runnable {
    SyncStack ss = null;

    Producer(SyncStack ss) {
        this.ss = ss;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            WoTou wt = new WoTou(i);
            ss.push(wt);
            System.out.println("生产了：" + wt);
        }

        try {
            Thread.sleep((int)Math.random()*1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }
}


class Consumer implements Runnable {
    SyncStack ss = null;

    Consumer(SyncStack ss) {
        this.ss = ss;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            WoTou wt = ss.pop();
            System.out.println("消费了：" + wt);
            try {
                Thread.sleep((int)Math.random()*1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
